# encoding: utf-8
# vi:si:et:sw=4:sts=4:ts=4
import sys
import os
try:
    import gi
    gi.require_version('Gtk', '3.0')
    from gi.repository import Gtk, GObject
    use_Gtk = True
except:
    from tkinter import Tk, PhotoImage
    import tkinter.filedialog
    use_Gtk = False

DEBUG = False


def short_home(path):
    home = os.path.expanduser('~')
    if path and path.startswith(home):
        path = path.replace(home, '~')
    return path

class GtkUI:
    def selectFolder(self, data):
        dialog = Gtk.FileChooserDialog(title=data.get("title", "Select Folder"),
                                       action=Gtk.FileChooserAction.SELECT_FOLDER)
        dialog.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
                           Gtk.STOCK_OPEN, Gtk.ResponseType.OK)
        dialog.set_default_response(Gtk.ResponseType.OK)

        response = dialog.run()
        if response == Gtk.ResponseType.OK:
            filename = dialog.get_filename()
            if DEBUG:
                print(filename, 'selected')
        elif response == Gtk.ResponseType.CANCEL:
            if DEBUG:
                print('Closed, no files selected')
            filename = None
        else:
            filename = None
        dialog.destroy()
        while Gtk.events_pending():
                Gtk.main_iteration()
        if DEBUG:
            print("done")
        return short_home(filename)

    def selectFile(self, data):
        dialog = Gtk.FileChooserDialog(title=data.get("title", "Select File"),
                                       action=Gtk.FileChooserAction.OPEN)
        dialog.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL,
                           Gtk.STOCK_OPEN, Gtk.ResponseType.OK)
        dialog.set_default_response(Gtk.ResponseType.OK)

        response = dialog.run()
        if response == Gtk.ResponseType.OK:
            filename = dialog.get_filename()
            if DEBUG:
                print(filename, 'selected')
        elif response == Gtk.ResponseType.CANCEL:
            if DEBUG:
                print('Closed, no files selected')
            filename = None
        else:
            filename = None
        dialog.destroy()
        while Gtk.events_pending():
                Gtk.main_iteration()
        if DEBUG:
            print("done")
        return short_home(filename)


class TkUI:
    def __init__(self):
        self.root = Tk(className="Open Media Library")
        png = os.path.join(os.path.dirname(os.path.abspath('__file__')), 'static', 'png', 'oml.png')
        icon = PhotoImage(file=png)
        self.root.tk.call('wm', 'iconphoto', self.root._w, icon)
        self.root.withdraw()  # hiding tkinter window
        if sys.platform == 'darwin':
            self.root.lift()
            self.root.call('wm', 'attributes', '.', '-topmost', True)
            self.root.update()
            self.root.after_idle(self.root.call, 'wm', 'attributes', '.', '-topmost', False)

    def selectFolder(self, data):
        folder = tkinter.filedialog.askdirectory(parent=self.root, title=data.get("title", "Select Folder"))
        return short_home(folder)

    def selectFile(self, data):
        filename = tkinter.filedialog.askopenfilename(parent=self.root, title=data.get("title", "Select File"))
        return short_home(filename)


if use_Gtk:
    ui = GtkUI()
else:
    ui = TkUI()

if __name__ == '__main__':
    base = '~'
    if len(sys.argv) >= 3:
        base = sys.argv[2]
    base = os.path.expanduser(base)
    os.chdir(base)
    if len(sys.argv) >= 2 and sys.argv[1] == 'folder':
        print(ui.selectFolder({}))
    else:
        print(ui.selectFile({}))